she said she lost the weight, i do cardio, i run, i use strength training using my body weight." she and her boyfriend are sharing his personal trainer. mily cyrus, the newly-engaged former disney star dropped an estimated 20 pounds with rumors she is extreme dieting. the 19-year-old is setting the record straight tweeting, for everyone calling me anorexic, i have a gluten and lactose allergy. it's not about weight, it's about health. exhibit c, rihanna. in six months she went to curvy to estimates of 15 pounds lighter, stunning everyone at the grammy in a backless armani. she talked body image with "i.t. breakfast." >> no one is ever 100% right. yes, i'm the bomb.com. >> hillary duff. >> it's a lot tougher than i thought. >> the new mom beginning to shed the baby weight three months after giving birth to son luka. >> i started doing circuit training which i'm really sore right now.